Hyundai Santa Fe: Heated Oxygen Sensor (HO2S). Description and Operation
Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed
both upstream and downstream of the Manifold Catalytic Converter. The sensor
output voltage varies in accordance with the air/fuel ratio.
The sensor must be hot in order to operate normally. To keep it hot, the
sensor has a heater which is controlled by the ECM via a duty cycle signal.
When the exhaust gas temperature is lower than the specified value, the heater
warms the sensor tip.
Knock Sensor (KS). Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold") 3. Disconnect the ...
Heated Oxygen Sensor (HO2S). Specifications
Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.5 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] A/F Ratio (λ) Output Voltage(V) RICH Approx. 0.9 LEAN Approx. 0.04 ...
See also:
Heated Schematic Diagrams
System Circuit Diagram Terminal Function Housing Pin Function Wire color Pad A GND Back B HEATER Yellow C NTC+ Back / Yellow D NTC- Back Remote control A GND Back B BAT Red C LED Green D SWITCH White ...
Gauges
Speedometer Type A Type B The speedometer indicates the speed of the vehicle and is calibrated in miles per hour (mph) and/or kilometers per hour (km/h). Tachometer Type A Type B The tachometer indicates ...
TPMS Receiver. Description and Operation
Description It search automatically sensor location and learn the new sensor. To check defect of system or vehicle, use the sensor information, distance, indistinct noise, automatic learning status, vehicle ...
